Sow production Piglets and piglets raising is an important part of the production of pig farms. Newborn piglets are small and weak, with poor body functions and poor resistance to cold. Aberrant piglet birth often occurs in winter . The survival rate of piglets, depends largely on the structure of pigsty, heating and ventilation and childbirth bar structure. Crate crate is a monomer crate, is the sow birth and breastfeeding piglets place. The middle of crate is the sow's limit stop, the place where the sows give birth and the piglets are breast-feeding, and the farrowing crat is where piglets feed, drink, heat and activity. Sow limit shelves are generally made of round steel and aluminum alloy, slat flooring installed at the bottom to facilitate the removal of excrement and dirt, on both sides of the piglet activity bar, used to isolate piglets. Farrowing crate and gestation crate are the keys to the modern farm design. Can improve safe and comfortable delivery and pregnancy environment, the survival rate and growth of piglets, lactation and physical recovery of sows are very important.